Can opener



FIG. 1 is a front perspective view of a can opener showing my new design;

FIG. 2 is a front perspective view in closed position;

FIG. 3 is a rear perspective view thereof;

FIG. 4 is a rear perspective view in closed position;

FIG. 5 is an enlarged front elevational view thereof;

FIG. 6 is an enlarged side elevational view thereof; and

FIG. 7 is an enlarged rear elevational view thereof. 

The ornamental design for a can opener, as shown and described. 